crypto

import hashlib
msg = 'yr6YCtcvW3QvzOAvWvc5XrupA1btFZb9jt=='
try:
    for i in xrange(0, len(res)):
        token = hashlib.sha1(res[i+1]).digest()
        n = ord(res[i])
        n ^= 0xf2 ^ ord(token[0])
        n ^= 0xd1 ^ ord(token[1])
        n ^= 0x20 ^ ord(token[2])
        n ^= 0x3c ^ ord(token[3])
        n ^= 0xca ^ ord(token[4])
        n ^= 0x54 ^ ord(token[5])
        n ^= 0x11 ^ ord(token[6])
        n ^= 0xf0 ^ ord(token[7])
        n ^= 0xa3 ^ ord(token[6])
        n ^= 0xfe ^ ord(token[5])
        n ^= 0x21 ^ ord(token[4])
        n ^= 0x4c ^ ord(token[3])
        n ^= 0x27 ^ ord(token[2])
        n ^= 0xf3 ^ ord(token[1])
        n ^= 0xc2 ^ ord(token[0])
        c = n ^ 0xfe ^ 0xc3 ^ 0x42 ^ 0x21
        msg += chr(c)
except:
    print msg[::-1]